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run code in 300+ PHP versions simultaneously
<?php $a = array('a','b'); $b = array('c','d'); $c = array_merge($a,b); echo $c; $d = array(0=>'e',1=>'f'); $c = array_merge($c,$d); echo $c;
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Uncaught Error: Undefined constant "b" in /in/aVREL:4 Stack trace: #0 {main} thrown in /in/aVREL on line 4
Process exited with code 255.
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant b - assumed 'b' (this will throw an Error in a future version of PHP) in /in/aVREL on line 4 Warning: array_merge(): Expected parameter 2 to be an array, string given in /in/aVREL on line 4 Warning: array_merge(): Expected parameter 1 to be an array, null given in /in/aVREL on line 7
Output for 7.2.0 - 7.2.33
Warning: Use of undefined constant b - assumed 'b' (this will throw an Error in a future version of PHP) in /in/aVREL on line 4 Warning: array_merge(): Argument #2 is not an array in /in/aVREL on line 4 Warning: array_merge(): Argument #1 is not an array in /in/aVREL on line 7
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33
Notice: Use of undefined constant b - assumed 'b' in /in/aVREL on line 4 Warning: array_merge(): Argument #2 is not an array in /in/aVREL on line 4 Warning: array_merge(): Argument #1 is not an array in /in/aVREL on line 7
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
Notice: Use of undefined constant b - assumed 'b' in /in/aVREL on line 4 ArrayArray
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206.07 ms | 402 KiB | 356 Q